Senior Data Engineer
Senior Data Engineer at Alchemy (a Web3/blockchain developer platform) builds and runs the internal data platform in New York, owning ingestion pipelines, Snowflake operations, workflow orchestration, and data quality for product usage, revenue, and cost analytics. Core stack: SQL, Python, Snowflake, Airflow, and dbt.
- Compensation
- $205K–$230K / yr
- Location
- New York
- Work setup
- Hybrid
- Seniority
- Senior
- Employment
- Not specified
- Experience
- Not specified
- Category
- Data engineering
- Posted
Skills
Must have
- Experience independently building and operating production data pipelines and the infrastructure around them
- Strong SQL and Python skills, including testing, debugging, and maintainable software design
- Experience with Snowflake or a comparable warehouse, including performance tuning and access management
- Experience with workflow orchestration and transformation tools such as Airflow and dbt, or equivalent systems
- Understanding of data modeling, incremental processing, schema evolution, and data-quality testing
- Ability to trace a data discrepancy from a downstream report back to its source, explain the cause, and fix it
- Good judgment about stakeholder needs: turn recurring requests into reusable datasets or tooling
Nice to have
- Kafka, database replication, or change-data-capture systems
- Apache Iceberg, Spark, Trino, or other lakehouse and query technologies
- Infrastructure as code, data observability, lineage, and disaster recovery
- Usage metering, billing and revenue data, or semantic layers for self-service analytics
Full description
About Alchemy
Alchemy is the Web3 infrastructure and developer platform that powers millions of users and the world’s most innovative blockchain applications. From enabling $1+ trillion in financial transactions worldwide to scaling L2s and enabling DeFi, Alchemy provides the infrastructure and tools developers need to build reliable, scalable, and accessible experiences.
Trusted by companies like JPMorgan, Stripe, Visa, Franklin Templeton, Nike, and backed by a16z, Coatue, Silver Lake, Lightspeed, and Stanford University, Alchemy is building the foundational layer for a decentralized and AI-enabled Web3 ecosystem. For more information, visit .
The Role
Build and run the internal data platform that helps Alchemy understand product usage, revenue, and the cost of serving customers. The existing Data Engineer intake centers on ingestion, Snowflake operations, workflow orchestration, data quality, and collaboration with analytics partners.
You will own ingestion, schema changes, and checks that show whether shared datasets are current and correct. You will work with analytics engineers and data scientists to define those datasets for reporting, analysis, and AI-assisted tools.
What You Will Do
- Build batch and streaming pipelines that connect operational databases, product events, billing systems, and external sources to the internal data platform.
- Make ingestion recoverable through change-data capture, schema-change handling, idempotent processing, and safe backfills.
- Operate and improve Snowflake, including access controls, workload management, query performance, and compute and storage costs.
- Improve orchestration and deployment workflows so engineers can test, ship, and debug pipelines safely.
- Build data-quality checks that detect stale, missing, duplicated, or inconsistent records before they reach downstream consumers.
- Work with analytics partners on shared data models, source definitions, and documentation. Make dataset ownership and upstream dependencies clear.
- Reduce recurring manual work and build reusable tools for self-service data access.
- Participate in production support and incident response for pipelines and the data platform. Restore data flow, reconcile affected datasets, and fix the causes of recurring failures.
What We Are Looking For
- Experience independently building and operating production data pipelines and the infrastructure around them.
- Strong SQL and Python skills, including testing, debugging, and maintainable software design.
- Experience with Snowflake or a comparable warehouse, including performance tuning and access management.